Which type of fire extinguisher is suitable for use on motorized vessels?

B-Class fire extinguishers are specifically designed to combat fires involving flammable liquids, such as gasoline, oil, and other petroleum-based products commonly found on motorized vessels. These types of fires can occur in the engine compartment, fuel tanks, or any area where gasoline or diesel fuel is present. The B-Class extinguisher contains agents that can effectively smother these fires, preventing them from spreading and helping to extinguish them safely.

A-Class fire extinguishers, on the other hand, are intended for ordinary combustibles such as wood, paper, and cloth, making them unsuitable for the type of fires expected on motorized vessels that involve flammable liquids. C-Class extinguishers are designed for electrical fires, while D-Class extinguishers are intended for combustible metals, which are not typically a hazard on boats. Therefore, for motorized vessels, B-Class extinguishers are essential for ensuring safety against specific fire risks associated with fuel and flammable liquids.